Raw material powder screening device for antibiotic-free feed

Abstract

The raw material powder screening device comprises a feeding hopper, a separating screen, a negative pressure bin and an air extracting pump, the separating screen is installed in the feeding hopper, a powder screening channel is formed between the separating screen and the feeding hopper, the negative pressure bin is installed in the separating screen, a powder containing cavity is formed between the negative pressure bin and the separating screen, and the air inlet end of the air extracting pump is communicated with the air outlet end of the negative pressure bin through a pipeline. A plurality of air holes with filter cotton are formed in the negative pressure bin. The powder screening device can be directly communicated with the discharge port of the pulverizer, after materials are screened by the separating screen, powder with qualified granularity or smaller granularity can penetrate through the separating screen to enter the powder containing cavity between the negative pressure bin and the separating screen under the action of negative pressure, large-particle materials and small-particle materials are separated, the materials are prevented from being too fine, and the crushing efficiency is improved. And the working efficiency of the crusher is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of feed screening equipment, in particular to a raw material powder screening device for antibiotic-free feed. Background Art

[0002] In the process of making antibiotic-free feed, liquid bacteria need to be mixed into feed raw materials. Feed raw materials are generally obtained by crushing grains such as corn and soybeans. During the crushing process, it is difficult to obtain feed raw materials with suitable particle size in one go, and usually multiple crushing processes are required.

[0003] When multiple crushing is carried out, the materials crushed last time are generally put directly into the silo of the crusher. However, these materials contain some materials with suitable particle size or even smaller particle size. This part of the material does not need or cannot be further crushed, otherwise it will not be possible to obtain antibiotic-free feed with suitable particle size after mixing with liquid bacteria. Moreover, this part of the material will be returned to the silo for crushing, which will increase the work intensity, increase the workload, and slow down the crushing efficiency of the crusher. Utility Model Content

[0004] The utility model aims to provide a device for screening raw materials for non-resistance feed, so as to solve the problem that the feed raw materials are not screened during multiple crushing, thus affecting the working efficiency of the crusher and the quality of the feed.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A powder screening device for raw materials of antibiotic-free feed comprises a feed hopper, a sorting screen, a negative pressure bin and an air pump, wherein the sorting screen is installed in the feed hopper to form a powder screening channel therebetween, the negative pressure bin is installed in the sorting screen to form a powder holding cavity therebetween, the air inlet end of the air pump is connected with the air outlet end of the negative pressure bin through a pipeline, and the negative pressure bin is provided with a plurality of air holes with filter cotton.

[0007] A further technical solution is that the pores are strip-shaped.

[0008] A further technical solution is: the sorting screen is a conical steel screen.

[0009] A further technical solution is that a plurality of baffles with inclinations are staggeredly arranged in the powder screening channel.

[0010] A further technical solution is: a scraper assembly for the powder cavity is provided on the feed hopper, the scraper assembly includes a scraper, a rotating ring, a worm and a motor, the rotating ring is rotatably installed at the bottom of the feed hopper, the scraper is connected to the rotating ring, and the scraper is located in the powder cavity, the worm is installed on the output end of the motor, and the worm is meshed with the tooth portion of the rotating ring.

[0011] A further technical solution is that the top of the scraper is rotatably connected to the negative pressure bin.

[0012] A further technical solution is that: a discharge port which is respectively matched with the powder screening channel and the powder material containing cavity is arranged at the bottom of the feed hopper.

[0013] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0014] The utility model provides a raw material powder screening device for non-resistance feed, which can be directly connected to the discharge port of a pulverizer. After the material is screened by the sorting screen, under the action of negative pressure, powder with a qualified particle size or smaller particle size will pass through the sorting screen into a powder material cavity between the negative pressure bin and the sorting screen, so that large particle materials and small particle materials are separated, thereby preventing the material from being too fine and ensuring the working efficiency of the pulverizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a raw material powder screening device for antibiotic-free feed.

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the medium negative pressure chamber.

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the structure of the middle scraper assembly.

[0018] Figure numerals: 1. feed hopper; 2. sorting screen; 3. negative pressure bin; 4. vacuum pump; 5. powder screening channel; 6. powder chamber; 7. pipeline; 8. filter cotton; 9. baffle; 10. scraper assembly; 11. scraper; 12. rotating ring; 13. worm; 14. motor; 15. discharge port. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1:

[0026] In this embodiment, Figure 1 As shown, a powder screening device for raw materials of non-resistance feed comprises a feed hopper 1, a sorting screen 2, a negative pressure bin 3, and an air pump 4. The sorting screen 2 is installed in the feed hopper 1 and a powder screening channel 5 is formed therebetween. The negative pressure bin 3 is installed in the sorting screen 2 and a powder holding cavity 6 is formed therebetween. The air inlet end of the air pump 4 is connected to the air outlet end of the negative pressure bin 3 through a pipe 7. The negative pressure bin 3 is provided with a plurality of air holes with filter cotton 8.

[0027] The material at the discharge end of the pulverizer enters the feed hopper 1, and is screened by the sorting screen 2. Large particles remain in the powder screening channel 5 between the sorting screen 2 and the feed hopper 1. Under the action of negative pressure, fine particles pass through the sorting screen 2 and enter the powder chamber 6, completing the separation of large particles and small particles.

[0028] Preferably, the air holes are strip-shaped.

[0029] The strip-shaped pores have a larger air flow rate and a better separation effect.

[0030] Preferably, the sorting screen 2 is a conical steel screen.

[0031] The conical steel screen can play the role of breaking the arch and diverting the flow, and at the same time the screening surface is larger, and in combination with the baffle 9, it can play the role of slope slowing down the flow, thereby improving the screening effect.

[0032] Preferably, a plurality of downwardly inclined baffles 9 are staggeredly arranged in the powder screening channel 5 .

[0033] The baffle 9 is used to deflect the material back and forth, slow down the material flow rate, and ensure the screening efficiency.

[0034] Embodiment 2:

[0035] Based on the above embodiments, this embodiment Figure 2 and Figure 3 As shown, the feed hopper 1 is provided with a scraper assembly 10 for the powder cavity 6, and the scraper assembly 10 includes a scraper 11, a rotating ring 12, a worm 13 and a motor 14. The rotating ring 12 is rotatably mounted on the bottom of the feed hopper 1, the scraper 11 is connected to the rotating ring 12, and the scraper 11 is located in the powder cavity 6, the worm 13 is mounted on the output end of the motor 14, and the worm 13 is meshed with the tooth portion of the rotating ring 12.

[0036] The motor 14 drives the worm 13 to rotate, and the worm 13 drives the rotating ring 12 to rotate. The rotating ring 12 rotates with the scraper 11 in the powder chamber 6 to scrape off the material adsorbed by the negative pressure on the negative pressure bin 3, which is convenient for material discharge and prevents the material from blocking the filter cotton 8.

[0037] Preferably, the top of the scraper 11 is rotatably connected to the negative pressure bin 3 .

[0038] This has the effect of stabilizing the rotation of the scraper 11.

[0039] Preferably, a discharge port 15 is provided at the bottom of the feed hopper 1 and is respectively matched with the powder screening channel 5 and the powder material chamber 6 .

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw material powder screening device for antibiotic-free feed, characterized in that: The invention comprises a feed hopper (1), a sorting screen (2), a negative pressure bin (3), and an air pump (4); the sorting screen (2) is installed in the feed hopper (1) and a powder screening channel (5) is formed between the two; the negative pressure bin (3) is installed in the sorting screen (2) and a powder storage chamber (6) is formed between the two; the air inlet end of the air pump (4) is connected to the air outlet end of the negative pressure bin (3) through a pipeline (7); and the negative pressure bin (3) is provided with a plurality of air holes with filter cotton (8).

2. The device for screening powder of raw materials for antibiotic-free feed according to claim 1, characterized in that: The pores are strip-shaped.

3. The device for screening powder of raw materials for antibiotic-free feed according to claim 1, characterized in that: The sorting screen (2) is a conical steel screen.

4. The device for screening powder of raw materials for antibiotic-free feed according to claim 1, characterized in that: A plurality of downwardly inclined baffles (9) are staggeredly arranged in the powder screening channel (5).

5. The device for screening raw materials for antibiotic-free feed according to claim 1, characterized in that: The feed hopper (1) is provided with a scraper assembly (10) for the powder material chamber (6), the scraper assembly (10) comprising a scraper (11), a rotating ring (12), a worm (13) and a motor (14), the rotating ring (12) being rotatably mounted on the bottom of the feed hopper (1), the scraper (11) being connected to the rotating ring (12), and the scraper (11) being located in the powder material chamber (6), the worm (13) being mounted on the output end of the motor (14), and the worm (13) being meshed with the toothed portion of the rotating ring (12).

6. The device for screening powder of raw materials for antibiotic-free feed according to claim 5, characterized in that: The top of the scraper (11) is rotatably connected to the negative pressure bin (3).

7. The device for screening raw materials for antibiotic-free feed according to claim 1, characterized in that: The bottom of the feed hopper (1) is provided with a discharge port (15) respectively matched with the powder screening channel (5) and the powder material containing cavity (6).

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